Save Data Transfer Tool
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This tool available from the eShop allows transferring savegames from the gamecard to the eShop version of the game installed on SD card. This tool only supports using a gamecard for the source and the SD version for the destination. The files stored in the original gamecard savegame are deleted once the transfer is finished.
Each time the tool is loaded, the tool downloads the blacklist of titles which can't have savegames transferred, to extdata with SpotPass. The content payload for this may contain hashes.
Transfer implementation
This app uses FSUSER commands which might be savedata-transfer related? This app includes code for using FS:OpenFileDirectly with archive 0x567890B2.
ExtData
The ExtData File System for Save Data Transfer Tool is as follows:
root ├── icon ├── boss │ └── FGONLYT00.tmp └── user
| File | Details | Size | FW Introduced | Plaintext |
|---|---|---|---|---|
| icon | Duplicated from application ExeFS. Always image 00000002. | 0x36c0 Bytes | n/a | Download |
| FGONLYT00.tmp | Where the data from fairy_bl.lrc is stored | 0x21c Bytes | 5.0.0-11 |